De missie van het Plant Sciences onderzoeksprogramma is om bij te dragen aan de duurzame productie van gewassen van hoge kwaliteit, bloemen en hoogwaardige producten met een biologische basis. Dit wordt gerealiseerd door het opdoen van fundamentele kennis over biologische processen omtrent de ontwikkeling…

Design and synthesis of two 3-substituted swainsonine derivatives with the aim to improve the potency and selectivity towards Golgi alpha-mannosidase II.

The thesis describes the development, synthesis and biological evaluation of several proteasome inhibitor designs. Mainly, this work focusses on designing proteasome inhibitors that selectively inhibit the immunoproteasome, while leaving the constitutive proteasome mostly, if not completely, untouch…

The aim of the research described in this thesis was to use structure-based design to optimise multiple properties of aryl sulfoxide monoacylglycerol lipase inhibitors as anti-inflammatory analgesics.

Wij voeren multidisciplinair onderzoek uit op het niveau van moleculen, cellen en organismen binnen de dierkunde. Ons doel is om fundamentele kennis te vergroten over gezondheid en ziekte.

In deze opleiding streef je naar het beantwoorden van biologische vraagstukken in relatie tot milieu, ecologie en andere maatschappelijk relevante onderwerpen.

In het onderzoeksprogramma Microbial Biotechnology voeren wij vernieuwend onderzoek uit in de biotechnologie en microbiologie.

In het onderzoeksprogramma Microbial Biotechnology voeren wij vernieuwend onderzoek uit in de biotechnologie en microbiologie.

Deze opleiding integreert genetica, moleculaire biologie en biotechnologie in een aantrekkelijk programma met uitstekende carrièreperspectieven.

Thesis focused on uncovering the underlying mechanisms of the lysosomal storage disorders Gaucher's disease using chemical tools, biochemical assays and lipidomics.

The chemical synthesis of inhibitors and probes targeting endo-glycosidases.

Synthetic methodlogy is described, aiding in the synthetic preparation of putative inhibitors of retaining and inverting glycosidases and glycosyl transferases. All constructs are cyclophellitol-based cyclitols.

Celebrating 20 years of Environmental Research and Education in Northern Cameroon

This thesis describes the design and synthesis of novel small molecules based on sulfur-containing heterocycles for the inhibition of glycosidases and glycosyltransferases related to Fabry and Pompe disease.

De nieuwste Europese quantumcomputer komt in Nederland. De ict-coöperatie van Nederlandse onderwijs- en onderzoeksinstellingen SURF krijgt hiervoor financiering van het Europese EuroHPC-programma. Leidse onderzoekers hebben een belangrijke rol: zij ontwerpen de algoritmes en de machine learning routes,…

This thesis surveys the intersection of computed tomography (CT) and machine learning (ML), treating CT as an ill-posed inverse problem shaped by object properties, imaging physics, and data limitations.

As a virtually inexhaustible source, solar energy plays a major role in future global energy scenarios.

In the search for sustainable energy solutions, the idea of artificial photosynthesis has been proposed as an approach with which to use water and sunlight to produce hydrogen.

Promotores: A.P. IJzerman, H.W.T. van Vlijmen

To improve cancer treatments, personalized medicine approaches have aimed to identify exactly which mutations are driving tumor development in a given patient and specifically target these mutations using precision therapies.

This thesis describes the development of a variety of mannosylated conjugates. Antigen presenting cells bear mannoside recognizing receptors that actively transport antigen into the cell. This thesis exploits this feature for the development of improved vaccines.

The findings in this thesis improve the understanding of 1) the relationship between exposure characteristics and toxicity of ENPs, 2) the joint toxic action of ENP mixtures and the comparison to metal salt mixtures, 3) how NOM affects the individual and joint toxicity of ENPs, 4) the extent of trophic…

This Thesis describes the synthesis of D-alanylated ribitol-based wall teichoic acids from S. aureus to probe their interaction with immune-binding partners.

Within this thesis the central stage is taken by the discovery and investigation of transglycosylation of sterols. First, investigation focuses on the development of a method to accurately detect and quantify glucosylated metabolites in biological materials.

Viral diseases constitute one of the major challenges in modern medicine. Membrane-targeting have broad-spectrum potential and could distinguish viral membranes from the host cell plasma membrane by the difference in membrane curvature.

In the last decades, activity-based protein profiling (ABPP) has emerged as a powerful chemical tool that may aid the ever-challenging drug discovery process.

Promotor: Prof.dr. M. Ubbink

Promotor: Prof.dr. H.S. Overkleeft

Microglia support the central and peripheral nervous system by forming the first line of defense against hazardous events. Microglia are increasingly acknowledged as critical players in neurodegenerative diseases, highlighting them as potential therapeutic targets.

How can we bridge the gap between experts and the general public?

Bacteria often experience external challenges, such as changes in environmental conditions or attacks by bacteriophages.

De traditionele scheiding van leeuwen in een Afrikaanse en een Aziatische ondersoort is onterecht, zegt bioloog Laura Bertola. In Afrika leven twee ondersoorten. Promotie 18 maart.

Tientallen jaren hebben taalwetenschappers zich het hoofd gebroken over de vraag hoe de zinsbouw van talen precies verschilt. Promovendus Martin Kroon ontwikkelde een computersysteem dat een antwoord dichterbij brengt. Promotie op 10 november.

Fate and toxicity of copper nanoparticles was related to the water chemistry of the environment and pristine size.

The work described in this Thesis is focused on the assembly of oligosaccharide fragments derived from a fungal polysaccharide, galactosaminogalactan (GAG) and fragments of the exopolysaccharide Pel, generated by Pseudomonas aeruginosa.

Nicotinamide adenine dinucleotide (NAD+) is the substrate used for the introduction of the ubiquitous and highly dynamic PTM in which either one or multiple adenosine diphosphate ribose (ADPr) moieties are covalently attached to a nucleophilic side chain of an specific amino acid in the target protein…

Promotor: Prof.dr. M. Ubbink, Co-promotor: G. Siegal

DNAmarkerpoint heeft als doel ecologie, evolutie en biodiversiteit beter te begrijpen door het bestuderen van modern en ancient DNA.

Neuraminidases are enzymes that cleave glycosidic linkages of sialic acid. These enzymes are involved in influenza infections as well as in many cellular processes in mammals and micro-organisms.

Cyclic peptides are investigated as a platform to induce different orientations between various ligands.

Projecten van de afdeling Environmental Biology

Evolution acts via mutations in amino acid sequences. Substitution of essential amino acids leads to a nonfunctional protein. l.

What is the optimal design of sandy solutions for sustainable climate change adaption, from an ecological, biophysical and societal point of view?

Het merendeel van de wetenschappers, van archeologen tot zoölogen, verzamelt enorme hoeveelheden gegevens. Hun databanken bevatten grote hoeveelheden informatie die voor de mens moeilijk te filteren zijn. Met een stevige basis in de statistiek en de computerwetenschappen kunnen we algoritmes ontwikkelen…

De Nobelprijs voor Scheikunde 2017 is uitgereikt aan Jacques Dubochet, Richard Henderson en Joachim Frank, voor hun ontwikkeling van de cryo-elektronenmicroscopie. Met deze techniek kunnen biomoleculen in 3D in beeld gebracht worden, legt hoogleraar Ultrastructuurbiologie Ariane Briegel uit.

‘We moeten op zoek naar producten die gewone wegwerpplastics kunnen vervangen, bijvoorbeeld van plantmateriaal. Binnen een jaar of 20 is het gemiddelde plasticgebruik van een huishouden met grote slagen verminderd.’ Volgens Thijs Bosker, Universitair Hoofddocent aan het Leiden University College, in…

This thesis focuses on the design and synthesis of activity-based probes and inhibitors targeting enzymes involved in the degradation of specific plant glycans.